1682531449 has 2 divisors, whose sum is σ = 1682531450. Its totient is φ = 1682531448.

The previous prime is 1682531441. The next prime is 1682531519. The reversal of 1682531449 is 9441352861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1608571449 + 73960000 = 40107^2 + 8600^2 .

It is an emirp because it is prime and its reverse (9441352861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1682531449 - 2³ = 1682531441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1682531441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841265724 + 841265725.

It is an arithmetic number, because the mean of its divisors is an integer number (841265725).

Almost surely, 2^1682531449 is an apocalyptic number.

It is an amenable number.

1682531449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682531449 is an equidigital number, since it uses as much as digits as its factorization.

1682531449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 1682531449 is about 41018.6719555863. The cubic root of 1682531449 is about 1189.3811835707.

The spelling of 1682531449 in words is "one billion, six hundred eighty-two million, five hundred thirty-one thousand, four hundred forty-nine".